Since we are discussing motherboards,then it worth while to get some Tntel views from about warranty.

Intel's view of the matter is that it considers its warranty voided if its products are operated outside of their specifications, regardless of whether the product in question is a CPU or a chipset. If a motherboard vendor advertises the overclocking potential of its product, then that company is liable for any damage to the CPU or the chipset that results from overclocking, and has to cover the cost.

In other words, if a motherboard maker claims that its board is designed for a 400 MHz FSB (1600QDR), then it has to ensure that the product is up to that task by using voltage regulators that can handle the higher strain without producing errors or becoming unstable. Based on Intel's statements about the new chipset for its 400 MHz FSB CPUs (1600QDR), we see that Intel is discouraging the use of the X38 chipset for this purpose, and will only guarantee compatibility with the X48 chipset.

Further-

If you buy a Core 2 Extreme QX9700, you should be able to run it in an X38-based board, which is, incidentally, exactly what Intel suggested we do to test this processor in the first place. However, if things do go wrong and the CPU or board are damaged, things may turn sour for you. Intel would most likely waive any warranty claims on the grounds that the chipset was being used outside of its specifications.

"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." -- Bill Gates